Tränenfluktuation

Tränenfluktuation refers to the natural variation in tear production and tear film stability. The tear film, a thin layer of fluid covering the surface of the eye, is essential for clear vision, lubrication, and protection from infection. Its composition and stability are not constant but fluctuate throughout the day and are influenced by various factors.

These fluctuations can manifest as a feeling of dryness, irritation, or even excessive tearing. Dryness may occur when tear production is insufficient or when the tear film evaporates too quickly. Conversely, excessive tearing can sometimes be a reflex response to irritation caused by a deficient or unstable tear film, as the eye attempts to compensate for the lack of lubrication.

Several factors contribute to Tränenfluktuation. Environmental conditions such as low humidity, wind, and air conditioning can increase tear evaporation. Prolonged visual tasks, like reading or computer use, can lead to reduced blinking frequency, which also impacts tear film distribution and stability. Hormonal changes, certain medications, and underlying medical conditions can also play a role. Understanding Tränenfluktuation is important for diagnosing and managing conditions like dry eye disease, where persistent tear film instability is a primary characteristic.